Vang, T.; Nguyen, D.; Le, T.; Le, L.; Pham, A.; Le, T.; Tran, H.; Pham, T. Enrichment of Anammox Sludge by Using an Internal Circulation Reactor Innoculated With Anaerobic Granular Sludge and Old Landfill Leachate. Science & Technology Development Journal: Science of the Earth & Environment 2023, 7, 683-690.